[Ducky considers the question for a moment.]

I should probably let it down. Do you have a good hairbrush? Maybe when we're through...ah...exerting ourselves, you can brush it out for me.

[In all honesty, that might be more intimate than sex; she's not just going to ask every casual partner for that.

She moves over to the nightstand and begins removing pins from her hair. There's clearly several in play.]